- use iso639-2 for language tag for dc:language

- list mn. 100 record for ListRecords request
- add header("Content-Type", "application/xml; charset=utf-8") inside oai.controller.ts

src/config/oai.config.ts

@@ -1,7 +1,7 @@
 const config = {
     max: {
         listidentifiers: 100,
-        listrecords: 50,
+        listrecords: 100,
     },
     workspacePath: "workspace",
 };

src/controllers/oai.controller.ts

@@ -95,7 +95,7 @@ export class OaiController {
             oaiRequest = request.query;
         } else {
             this.xsltParameter["oai_error_code"] = "unknown";
-            this.xsltParameter["oai_error_message"] = "An internal error occured.";
+            this.xsltParameter["oai_error_message"] = "Only POST and GET methods are allowed for OAI-PMH.";
         }
         // const oaiRequest: OaiParameter = request.body;
         try {
@@ -157,7 +157,7 @@ export class OaiController {
         }
 
         response
-            .header("Content-Type", "application/xml")
+            .header("Content-Type", "application/xml; charset=utf-8")
             .header("Access-Control-Allow-Origin", "*")
             .header("Access-Control-Allow-Methods", "GET,POST");
         response.status(StatusCodes.OK).send(xmlOutput);